Quaeitur – The question is raised.
Quantum – How much, an amount.
Qui facit per alium, facit per se – He who acts through another acts himself.
Qui haeret in litera, haeret in cortice – He who stices to the letter, sticks to the bark.
Qui in utero est, pro jam nato habetur, quoties de ejus commodo quaeritur – He who is in the womb is considered as already born as far as his benefit is considered.
Qui non habet potestatem alienandi, habet necessitatem retinendi – He who has not the power of alienating is under the necessity of retaining.
Qui non habet, ille non dat – He who has not, does not give.
Qui non improbat, approbat – He who does not disapprove, approves.
Qui non obstat quod obstare potest facere videtur – He who does not prevent what he is able to prevent, is considered as committing the thing.
Qui non prohibet quod prohibere potest assentire videtur – He who does not prohibit when he is able to prohibit, is in fault.
Qui peccat ebrius, luat sobrius – He who does wrong when drunk must be punished when sober.
Qui potest et debet vetare et non vetat jubet – He who is able and ought to forbit and does not, commands.
Qui prior est tempore potior est jure – He who is prior in time is stronger in right.
Qui sentit commodum, debet et sentire onus – He who derives a benefit ought also to bear a burden.
Qui tacet consentire videtur – He who is silent appears to consent.
Quid pro quo – Consideration. something for something.
Quidcquid plantatur solo, solo cedit – Whatever is planted in or affixed to the soil, belongs to the soil.
Quod ab initio non valet, in tractu temporis non convalescit – What is not valid in the beginning does not become valid by time.
Quod constat curiae opere testium non indiget – What appears to the Court needs not the help of witnesses.
Quod necessarie intelligitur, id non deest – What is necessarily understood is not wanting.
Quod necessitas cogit, defendit – What necessity forces it justifies.
Quod non apparet, non est – What does not appear, is not.
Quod non habet principium non habet finem – What has no beginning has no end.
Quod per me non possum, nec per alium – What I cannot do through myself, I cannot do through another.
Quod prius est verius est; et quod prius est tempore potius est jure – What is first is more true; and what is prior in time is stronger in law.
Quod vanum et inutile est, lex non requirit – The law does not require what is vain and useless.
Quoties in verbis nulla est ambiguitas, ibi nulla expositio contra verba expressa fienda est – When there is no ambiguity in words, then no exposition contrary to the expressed words is to be made.